We added that "select MEMORY_ISOLATION" in commit ee6f509c3274 ("mm: factor out memory isolate functions"). However, in commit add05cecef80 ("mm: soft-offline: don't free target page in successful page migration") we remove the need for it, where we removed the calls to set_migratetype_isolate() etc. What CONFIG_MEMORY_FAILURE soft-offline support wants is migrate_pages() support. But that comes with CONFIG_MIGRATION. And isolate_folio_to_list() has nothing to do with CONFIG_MEMORY_ISOLATION. Therefore, we can remove "select MEMORY_ISOLATION" of MEMORY_FAILURE. Acked-by: David Hildenbrand Signed-off-by: Xie Yuanbin --- mm/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/Kconfig b/mm/Kconfig index 034a1662d8c1..0e26f4fc8717 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -742,21 +742,20 @@ config DEFAULT_MMAP_MIN_ADDR This value can be changed after boot using the /proc/sys/vm/mmap_min_addr tunable. config ARCH_SUPPORTS_MEMORY_FAILURE bool config MEMORY_FAILURE depends on MMU depends on ARCH_SUPPORTS_MEMORY_FAILURE bool "Enable recovery from hardware memory errors" - select MEMORY_ISOLATION select RAS help Enables code to recover from some memory failures on systems with MCA recovery. This allows a system to continue running even when some of its memory has uncorrected errors. This requires special hardware support and typically ECC memory. config HWPOISON_INJECT tristate "HWPoison pages injector" depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS -- 2.48.1